Definitions for diesel engine
diesel en·gine

Princeton's WordNetRate this definition:0.0 / 0 votes

1. diesel, diesel engine, diesel motornoun

   an internal-combustion engine that burns heavy oil

WiktionaryRate this definition:0.0 / 0 votes

1. diesel enginenoun

   an internal combustion engine which operates using diesel fuel

WikipediaRate this definition:0.0 / 0 votes

1. Diesel engine

   The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Diesel engines work by compressing only air, or air plus residual combustion gases from the exhaust (known as exhaust gas recirculation (EGR)). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases the air temperature inside the cylinder to such a high degree that atomised diesel fuel injected into the combustion chamber ignites. With the fuel being injected into the air just before combustion, the dispersion of the fuel is uneven; this is called a heterogeneous air-fuel mixture. The torque a diesel engine produces is controlled by manipulating the air-fuel ratio (λ); instead of throttling the intake air, the diesel engine relies on altering the amount of fuel that is injected, and the air-fuel ratio is usually high. The diesel engine has the highest thermal efficiency (engine efficiency) of any practical internal or external combustion engine due to its very high expansion ratio and inherent lean burn which enables heat dissipation by the excess air. A small efficiency loss is also avoided compared with non-direct-injection gasoline engines since unburned fuel is not present during valve overlap and therefore no fuel goes directly from the intake/injection to the exhaust. Low-speed diesel engines (as used in ships and other applications where overall engine weight is relatively unimportant) can reach effective efficiencies of up to 55%. The combined cycle gas turbine (Brayton and Rankin cycle) is a combustion engine that is more efficient than a diesel engine, but it is, due to its mass and dimensions, unsuited for vehicles, watercraft, or aircraft. The world's largest diesel engines put in service are 14-cylinder, two-stroke marine diesel engines; they produce a peak power of almost 100 MW each.Diesel engines may be designed as either two-stroke or four-stroke cycles. They were originally used as a more efficient replacement for stationary steam engines. Since the 1910s, they have been used in submarines and ships. Use in locomotives, buses, trucks, heavy equipment, agricultural equipment and electricity generation plants followed later. In the 1930s, they slowly began to be used in a few automobiles. Since the 1970s energy crisis, demand for higher fuel efficiency has resulted in most major automakers, at some point, offering diesel-powered models, even in very small cars. According to Konrad Reif (2012), the EU average for diesel cars at the time accounted for half of newly registered cars. However, air pollution emissions are harder to control in diesel engines than in gasoline engines, so the use of diesel auto engines in the U.S. is now largely relegated to larger on-road and off-road vehicles.Though aviation has traditionally avoided diesel engines, aircraft diesel engines have become increasingly available in the 21st century. Since the late 1990s, for various reasons -- including the diesel's normal advantages over gasoline engines, but also for recent issues peculiar to aviation -- development and production of diesel engines for aircraft has surged, with over 5000 such engines delivered worldwide between 2002 and 2018, particularly for light airplanes and unmanned aerial vehicles.

WikidataRate this definition:0.0 / 0 votes

1. Diesel engine

   A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel that has been injected into the combustion chamber. This is in contrast to spark-ignition engines such as a petrol engine or gas engine, which uses a spark plug to ignite an air-fuel mixture. The engine was developed by German inventor Rudolf Diesel in 1893. The diesel engine has the highest thermal efficiency of any standard internal or external combustion engine due to its very high compression ratio. Low-speed diesel engines can have a thermal efficiency that exceeds 50%. Diesel engines are manufactured in two-stroke and four-stroke versions. They were originally used as a more efficient replacement for stationary steam engines. Since the 1910s they have been used in submarines and ships. Use in locomotives, trucks, heavy equipment and electric generating plants followed later. In the 1930s, they slowly began to be used in a few automobiles. Since the 1970s, the use of diesel engines in larger on-road and off-road vehicles in the USA increased. As of 2007, about 50% of all new car sales in Europe are diesel.

Matched Categories

1. • Internal-combustion Engine

How to pronounce diesel engine?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

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   Oliver

   British

   Wendy

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   South African

How to say diesel engine in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of diesel engine in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of diesel engine in Pythagorean Numerology is: 9

Examples of diesel engine in a Sentence

1. Manuel Valls:

   In France, we have long favored the diesel engine. This was a mistake, and we will progressively undo that, intelligently and pragmatically.

2. Volvo Chief Executive Hakan Samuelsson:

   The diesel engine will be more expensive and we need to fulfill the 95 grammes. Then the twin engine is a very attractive alternative.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=diesel engine
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Diesel_Engine
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Diesel_Engine
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=diesel engine